Ore-concentrator.



E. DEIS I'ER.

ORE GONGENTRATOR.

APPLIQATION FILED 0019, 1905.

3 SHEBTS-SHEET- 1.

' Patented May 11, 1909.

WITNESSES:

M WVENTOR Arman/5y E. DEISTBR. ORE GONCENTRATOB.

APPLICATION FILED OUT. 9, 1905.

921 99. Patented May 11, 1909.

3 SHEETS-SHEET 2.

WITIV888: JIWENTOR E. DEISTER.

ORE GONGENTRATOR.

APPLICATION FILED 0.01. 9, 1905.

Patented May 11, 1909.

3 SHEETS-SHEET 3.

ATTORNEY r a s eoifioation.

UNITED s'r rns" r 'ir-nnrornion EMILDEISTER, or FORT WAYNE, INDIANA, ASSIGNOR TO THE DEISTER GONGENTRATOR ooMPANY, A oonronA'ispn oFj1NnIANA. r

ORE-CONOENTRATOR. I

Specification of'Lette'rs Patent. Application filed October 9,

Patented May '11, 1909. 1905; Serial No. 282,048.

To aawhom it may concern:

Be it known that I, EMIL DEISTER, a citizen of the United States.of America, and residentof Fort Wayne, in the county of Allen and State of Indiana, have invented certain new and useful Improvements in Ore-Concentrators, of which the following is.

his invention relates to improvementsin. ore concentrators, and the objects thereof are to facilitate settlement of the metallic portion of ore pulp upon the concentrating surface of the table; and to elicct'a more perfeet final separation of mineral values from the partially concentrated mass of pulp than is ordinarily attained; and further, to efl'ect the discharge of concentrates from the con centrating table as they become clean. The aboveobjects are accomplished byjthe construction illustrated in the accompanying drawings, in which: Y J Figure 1, is a plan view of the invention, a; portion. of the dressing water" supply-pipe being cut away; Fig. 2, is a side elevation of the same,'a portion of the adjustable darn being cut away forsh'owing discharge openings for tailings Fig. 3. is a head end elevation of the mz'tchine'; Fig. 4. is across section of the concentrating table on the line a'--;r of Fig. 1; Fig. 5. is a detail View showinga cross section, upon an enlarged scale, of a portion of the conccntrating-tablc on the line x-a' of Fig. 1; Fig; 6. is a detail View showing a portion of the side of the concentrating table where jcoin-eiurates are dis fchargc d; Fig. 7. is a detail view in pcrspcc tive, upon an enlarged scale, showing the relative position of oneshoal Withthe ad, ja'ccnt shoals; Fi 8, is alongitudinal section, upon an enlarged scale, of one, of the shoals. Fig, 9 is adetail perspective view of one of the shoals and concentrates launder; and 10 is a detail View showing the connecting rod and spring foiwholding it in connection with the 4 shown cut away. i

Similar numerals of reference indicate cor'. responding parts throughout the severalviews, and referring; now to the same: 1 is a concentrating table, preferably of triangular form, mounted upon swinging props 2,3, 4,5, and 6, respectively, which admit longitudiranged in alinement beneath lever; the latter being the table. The props 2, 3, and'4, are arthe table along the -longest side thereof and support the same, respectively, at points indicated by the dotted circles 7, 8, and 9 and the rope 5 and 6 are similarly arranged beneath the table and support the same at points adja cent the tailings discharge side of the table as indicated respectively by thedotted circles 10 and-11. The two r0ps.2 and 4 are made wide at the base in or or to prevent the table from movin laterally respecting the'line of motion and the twoprops 5 and 6 are made adjustable by means of wedges 12 and 13 so that the tailings dischargeside'ofthe table: as desired. to give may be elevated or lowered the table a suitable declinetoward its tailings discharge side"; Each of the props Sand 6 rest upon a movable block 14 which is loosely arranged ina'corresponding cylinder 15. the block being adapted tobe raised or lowered accordingly. as the corresponding wedge is adjusted. The wedges 12 and 13, are con- "nec'ted by a rod 16, and the. wedge 13 has in connection therewith a screw-threaded rod 17 which extends through afixed bracket 18; and the rod=17 has-mounted thereon adjusting wheels ioupbn either side of the bracket, so that the wedges may be adjusted and held in a desired positionby.nianipulating the wheels 19 The concentrating,surface of the, table is composed of a series ofsteps 20 arranged in parallel relation with each other, and each successive stepis lower than theadjacent preceding step, the loweri-nost step being nearest the tailin'gs discharge side of the tasaid steps ble, and the upper surfaces of all of are approxinn-ttely level in cross sectionand range upon a uniform incline toward the concentrateslischarge portion of the table. Along discharge edge of each step is an upwardly projecting lip, 21 which. extends step, and uponeach step issecure a uni form series of aiflies 22, each riffle-con11nenc-' ing its course Fat the correspondinglip and ranging diagonally upon the a'dj acent surface of the correspondingstep and all the riflies are disposed in the direction of the concentrates-discharge side of the table; 4

throughout the length of the corres ending nal, reciprocating motion to be imparted to I lower ends of the steps upward toward the head-inward 24; and a feed-box 25, having feed-openings 26 in the bottom thereof, is

mounted in connection with the table along the forward portion of the longest side there of. An inclined shelf 27 is attached to the underside of the feed-box and serves to more or less distribute the ore-pulp as it passes from the feed-openings onto the table:

Along the tailings-discharge edge-of the table is secured an apron 28 consistin of a plate which extends both above and below the adjacent edge of the table, and a series of railings-discharge openings 29 are made in the apron in line with the adjacent concentrating surface of the table. A vertically adjustable-dam 30 rests against the outer face of the apron 28, and extends throughout the length of the apron to'the rear end of the table where it is pivotedly connected to the latter as indicated at 31. The dam is held in place against the apron by. means of springs 32, and is held in adjusted position by means of a suitably mounted thumb-nut 33.

At the rear end of each step is fixed a shoal 34, the upper surface of which grad .ually-ascends from the adjacent concentrating surface of the corresponding step toward its head 35. The outer edge of each shoal has an upturned flange 36 which extends I from its head to the head of the next preceding shoal, where it connects with the adjacent innermost side thereof. The said flanges thus arranged, in connection with the heads of the respective, shoals, constitute a levee which prevents an overflow of pulp from the table at its concentrates-discharge side. The concentrating surface 37 of each shoal.

narrows toward its upper rear portion and leads up to the throat 38 which communicates with the concentrates-discharge open ing 39, and the latter opens intoa discharge spout 40. Upon either side of the throat 38 is a miniature plateau 41, each of which. ex-v tends to the corresponding side of the shoal iand has a gradually rounded inner margin 42. Upon the concentrating surfac'eof the shoal are several riflies 43 which lead toward the throat from the corresponding sides of the shoal'and extend'toward the entrance of its throat, the upper ends of the two rear riflles ranging between the plateaus. The head 35 of each shoal is hollow and has an elongated opening 44 at its top, and has also dischargeports .45 which lead respectively out upon the corresponding plateaus 41. The shoals are all located in the, same horizontal plane, the height of each at the throat being approximately in line with the level of water,

upon the table, which is maintained b adustmg the dam accordin ly as the tai ingsdrschargesrde of the tab e is raised or lowered. A pipe 46 is supported by suitable standards 47 and extends alon the concentrates-discharge side of the tale, adjacent the shoals; and a series of cocks 48 connect with the pipe 46, .and are adapted respectively'to discharge dressing water into the corresponding openings 4a of the correspondin shoals. The pipe 46 is connected with a suitable head (if water by means of a connecting pipe 49, the latter having a valve 50.

The actuating mechanism consists of a rotative shaft 51 which has mounted thereon v tight and loose pulleys 52, and is mounted in a sup orting casting 53 which is secured upon abet 544 'An eccentric '55 on the shaft 51 has driving relation with the connecting rod 56. A lever 57 is connected at its lower end to a shaft 58 which is suitably supported in connection with the bed, and the upper end of the lever is bifurcated and has a series of notches 59 made'therein in which the ends of the cross head 60 are adapted to be seated. The cross head 60 is adapted to be shifted from one pair of notches in the bifurcated end of the lever to the otherpairs of notches and thus cause the lever to be actuated with a greater or less range of movement, and the cross head is held in position in said notches by means of a screw-threaded hand-piece 61 which is mounted upon the projecting end of the connecting-rod 56. The said hand-piece has in connection therewith a coil spring 62 which acts against the adjacent face of the lever.

A'driving rod 63 extends at its rear end through a bracket 64 which is rigidly fixed to the underside of the table, and-upon said rod is secured two-sets of jam-nuts 65, one set upon either side tot-said bracket 64; and a stiff coil s ring 66 is interposed between one set of sai jam-nuts and the bracket which serves to prevent play-between the drivingrod and table. The forward end ofsthe driv-- ing-rod extends loosely through 9. lug 67 which projects fronr the lever 57, and'has mounted upon its extreme-end a collar. 68. A rubber bufier 69 is interposed between the collar and the adjacent face of the lug 67; and a yielding coil s ring 70 is interposed between the o posite ace of the lug 6,7 and an adjacent co ar 71 which has screw-threaded relation with the driving-rod. By adjusting the collar 71 so as to increase or decrease the stress upon the 5 )ring 70, the degree of differ- .ential motion infparted to thc table may be varied.

In the operation of this invention, the table is set in differential reciprocating motion lengthwise respecting the steps, and a suitable quantity of dressing water is su plied to the shoals fronrthe cocks 48. Orc pulp is then supplied to the feed-box in the usual manner. It is the intention to maintain a suitable depth of water upon the table, and to effect eenoso a this the dam is raised ,sufiiciently so that come cleaned, instead of being conveyed-over the water will rise upon the table to a height a long course to a common concentrates-disapproximately in line with the throats of the charge place as on ordinary tables, thus shoals. The tailings openings 29, in the avoiding a loss of mineral values occasioned apron, are numerous and'of a size capable of by protracted contact with the dressing wapassing the solids or" the tailings, but are not 'ter as usually applied. Another feature of such as to drain the table of its bodyof water this invention is in "the position of the adjustso as to prevent the Water'overflowing'the able props '5' and '6 relative to the table and am while the contemplated quantity of the non-adjustable props 2, P and 4: It will pulp is being supplied to the machine. Be-' be obvious that by lfllslng or lowering the cause of the buoyancy afiorded the pulp by former props, the table will thereby become the detained body of wateryupon the table, tilted so that the longitudinal inclineof the the mineral values of the pulp quickly settle s te s will be decreased or increased accordupon the concentrating surface of the table, ywithout altering the horizontal position I and thereupon are carried toward the shoals he concentrates-discharge side of the table,

because of the differential motion of the table. and therefore, the shoals will be maintained at The pulp tends to move toward the tailingsa uniform height; and when the table is tilted discharge side of the table, andthe under by lowering or raising the adjustable pro s, lying portion of the settled ore-matter is movement of pulp toward the tailingsed is- 20 moved toward the shoals, While .the over char e side'of the'table will accordingly be lying portion thereof falls from step to-step 'acceferated or retarded. Y I V successively to the discharge ed e of.- the 'Matter somewhat similar in character is table where it becomesdischa'rge through 1 contained in a previous applicatiomsr. No. the tailings-openings 29, or is carried over 274,515, filed by me August 17, "1905, for the dam with the overflow water. The ore concentrators; the similarity residing underlying port on of the settled-ore-matter particularly inthe Shoals." I i is detained upon the steps more 'orj'less'be- 1 V Havingvdes'cribed my 'i'rivention'what I causesof the projecting lips 21 ,and'is further claim as new anddesire to*secure by Letters conserved u on the steps .b the diagonally Patentfis:

30 disposed rifllles thereon, and as'such under-f "1, Inario're concentrator, ,a transversely lying ore-matterreachesthe sho'alsitwil-lhave inclinedreci rocaing concentrating table, become ,rnore or less separated from ithe having alev'e' concentrates disoharge portion, gangue and maybe said to have been p'ar- *the concentrating surface of the tab e being mg oft tlally concentrated. This partially conoencomposed-offs series of steps arranged longi- 35 trated material enters the shoals and masses tudinally and in parallelrelation with each at the. entrance of the throats thereof," and is other andinlin 'wlth the direction of the 1110- there shaken and simultaneously subjected 'tion of the table, approximately, and, all the Q tothe washing action produced by the dis-' steps ranging uponan incline toward the said charge of dressingwater :from the ports 45. concentrates-discharge portion ;an upwardly -10 The effect of this treatmentfisxsuchasto projectinglipsecur'ed alongthedischarg'e edge cause the lighter portions of the partially of each step; a series of riflfles secured upon concentrated masses to passbackward from the concentrating surface of.each step, each the throats of the shoa s andifall'ov'er'the riflie commencing itsfcours'e' at the correinner edges thereof upon'the next succeeding spending lipand ranging dlagonallyupon'the steps respectively. The heavier portions of adjacent surface of the corres ending-step; the partially concentrated masses, thus freed a shoal located at the r 69011 n.

from the lighter rportions, pass r onward the concentrating surface of each shoalias through the throats and into theopenings39 'cending from the concentrating surface or the and are discharged through the spouts 40. A corresponding step,- each shoal having #a 5 launder 72 is secured to the table immediately throat and discharge opening; means for en beneath the spouts 40 to: receive the displying each shoal with dressing Water at t c 11.5 -h f concentrates th refrom, and the sides of its-throat; and'a' dam in connection discharge end 73 of the launder is preferably With the tailings-discharge side of the table located at the rear; end ofthetable.-: a I ada ted to maintains water level upon the c A particularfeature in thefo 'eration of 'tabl e approximately in line with the throats this invention is. that the partia y concen-' of'the shoals. {rated material is treatedj in the shoals to a 2. In an ore concentrator, a transversely shaking and washing action in '--masses, in inclinedreciprocatingconcentratin table, the contradistinction tothecommon practice of concentrates-diseharge side of which ranges m spreading the, partially concentrated .main a horizontalplane, haying thereon a series ierial in a thin'layer over asmooth and unof rifliesedaptedto direct" underlying Me protected, or unrifiled, washing surface; and matter toward its concentrates-discharge 1n the resent inventionthe concentrates beside; a series of shoals arranged along the i come rschi-irged from the table, as they be cancentrates-discharge side of the table, each ranging upen an incline from the adjacent concentrating surface thereof, and each having a threat and discharge opening; means for supplying dressing water to each shoal atthe si l tion with the tailingsedi'sc ia rge side of the table adapted to maintain a waterlevel over es of its throat; and d a u in connecthe table approximately upto the throats of.

the shoals.

3. In an ore concentrator, a transverselyinclined reciprocating concentrating table having riffles thereon adapted to direct uneach shoal at the si derlying ore matter toward its concentrate dischargeside; a seriesof shoals located along the concentrates discharge side of thetable, eachhaving a discharge'openingnear.-v

its head, and throat leading from its eoncen-g trating surface to its 0 ening, the outer edge of each shoal being big or than its inner'edge;

and means for supplying'dressing water'to es of its throat,

.'4. In an ore concentrator, a transversely inclined reciprocating concentrating table,

the concentrates-discharge side of which ranges in a horizontal plane, having thereon a'series ofjrifiles adapted to direct underlying ore-matter toward its concentrates-discharge side; a series of shoals arranged in successive order along the concentratesedischarge side of the table, the outer'edgeof each shoal having an upturned flange, the said flanges constituting a levee adapted to revent an overflow of pulp from the tab e at itseoncentrates-discharge side, and each shdal having also a throat and discharge opening; means for supplying dressing water to each shoal at the si es of its throat; and a dam in connec tion with thetailings-discharge side of the tablc'adapted to maintain a water level over the table approximately up to the throats of the shoals.

5. In an ore concentrator, a transversely inclined reciprocating concentrating table having riflfles thereon adapted to direct underlying ore-matter toward its concentrates-discharge side; a series of shoals loeatedalong the concentrates-discharge side of the table, each having a throat at its discharge end and plateaus upon each side of its throat; and means for supplying dressing water to each shoal upon its plateaus.

6. In an ore concentrator, a transversely inclined reciprocating concentrating table of triangular forin, and'liaving riflies thereonadapted to direct underlying ore-matter toward its concentrates-discharge side, the said concentrates-discharge side ranging in a horizontal plane; a series of shoals, at the concentrates-discharge side of the table, adapted to receive ore-matter directly from the adjacent concentrating surface of the table, each shoal having a' discharge opening, and throatleading from its concentrating surface to its cameo o ening, the outer edge of each shoal being higher than its inner edge; and means for supplying dressing water to each of said shoals at'thesid-es of its throat,

- 7. In an ore concentrator, a transversely inclined reciprocating concentrating table havin riflles' thereon adapted to direct underlying ore-matter toward its concentrates-discharge side; a series of shoals located along the conce11trates-discl'1arge side ofthe table, each having a throat and discharge opening; an upwardly PIOJGCtlDg apron, secured along the tailings-diseharge side of a the table, having tailings openings therein inline with the adjacent concentrating surface of the table; a dam in connection with the apronadaptedto maintain a water leveLover the table approximately up to the threats of the shoals; and means for supply ing dressing water toeachshoal at the sides of its throat.

8; In an ore concentrator, a transversely inclined reciprocating concentrating table of triangular form, the eoneentratesd1scharge side of which is level and the tailings-discharge side of which rangesupon an incline toward its rear end, and the concentrating surface of which is composed of a series of steps which extend lengthwise up to the concentrates-discharge side thereof; a series of shoals located along the concentrates-discharge side of the table,-one at the end of each step, and being adapted for the purpose set forth; means for supplying dressing water to each shoal; and a dam in connection withthe tailings-discharge side of the table adapted to maintain a water level over the table approximately up to its concentrates- -discharge side.

9. In an ore concentrator, a transversely inclined reciprocating concentratingtable of triangular form, the concentrates-discharge side of which is level, and the tailings-dis-' upon each of said steps, each riflle commen'ci'ng its course at the corresponding lip; means for supplying dressing water to each shoal," and a dam in connection with. the tailingsdischarge side of the table adapted to maintain awater level over the table approxiniately up to its concentrates-discharge side."

. 10; In an ore concentrator, a transversely inc inclined reciprocating concentrating table of triangular form, the concentrates-discharge side of which is level, and the -'ta1l1ngs-discharge side of which ranges unon an incline tain a, water level over the table epproxir' 10 toward its rear end, and having thereon a.

- series of rifiies adapted to direct underlyin ore-matter toward ts concentrates-dischargeside; a, series of shoals located alon the concentretes-discharge. side of the tab 0; means for supplying dressing water toeach shoal' and adam. in connection with the tailings' discharge side oi the table adapted-to inamg mately up to its concentrates-discharge side. Intestm o'ny whereof I afiix my signature. in presence of twowitnes'ses.

EMIL DEISTERL Witnesses:

WM. H. BENSMAN,

HERMAN J. LAMPKE: 

